EUVD-2026-84993
GHSA-7jm5-7xjw-qq97
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Deserialization of an attacker-controlled npy-stack info file is a code-execution primitive; requires a victim to load a local/supplied file (AV:L, UI:R), no auth on a library call (PR:N).
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
5DescriptionCVE.org
A security vulnerability has been detected in Dask up to 2026.8.0. This affects the function from_npy_stack of the file dask/array/core.py of the component Loader. Such manipulation leads to deserialization. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
AnalysisAI
Deserialization in Dask's from_npy_stack() array loader (dask/array/core.py) allows an attacker who can supply or influence the npy-stack path/directory being loaded to trigger unsafe object deserialization, potentially yielding code execution in the victim's process with high confidentiality, integrity and availability impact (assessed CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Affected are Dask versions through 2026.8.0; this is not exploitation of a listening network service, since successful abuse requires the victim application to deliberately call from_npy_stack() on the attacker-influenced data source (UI:R). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a victim application to call Dask's `from_npy_stack()` function on an attacker-controlled npy-stack path/directory, meaning the attacker must be able to supply or influence the data source that the victim loads (UI:P - user interaction / explicit load action is required). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a CWE-502 deserialization flaw in Dask's `from_npy_stack` loader (dask/array/core.py) affecting versions up to 2026.8.0. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch identified at time of analysis: Dask maintainers were notified through public issue https://github.com/dask/dask/issues/12578 but had not responded, so no fixed version number can be cited and users should treat the advisory trail (https://vuldb.com/vuln/408543, https://vuldb.com/cve/CVE-2026-95897) as the current reference point. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
Leaving vuln.today